Untitled record
Abstract
This record has no abstract on file.
Term
Term ended
Expired 13 October 1949, 76.9 years ago.
- Priority and filed
- Granted
- Expired
- Today
1 claim: 1 independent, 0 dependent
- 1CLAIMS:i. A rock drill lubricating device characterized by a compliant cuff (8) on the machine head forming the outer wall of one or more lubricant containing chambers (io) formed between it and the hammer head. z. Lubricating device according to claim i, characterized in that the sleeve (8) consists of rubber. Third Lubricating device according to claim i, characterized by a number of longitudinal recesses (io) for receiving a lubricant on the outer surface of the drill head (6) from which the lubricant by pressure on the surrounding the drill head sleeve (8) through channels (7) to the is pressed lubricating parts. q .. Lubricating device according to claim 3, characterized in that the rubber sleeve (8) is thickened at the points which lie above the ribs separating the individual chambers (io) from one another. PATENTANSPRÜCHE: i. Schmiervorrichtung für Gesteinsbohrhämmer, gekennzeichnet, durch eine nachgiebige _ Manschette (8) am Maschinenkopf, welche die Außenwandung einer oder mehrerer zwischen ihr und dem Bohrhammerkopf gebildeten, ein Schmiermittel enthaltenden Kammern (i o) bildet. z. Schmiervorrichtung nach Anspruch i, dadurch gekennzeichnet, daß die Manschette (8) aus Gummi besteht. 3. Schmiervorrichtung nach Anspruch i, gekennzeichnet durch eine Anzahl längsgerichteter Vertiefungen (i o) zur Aufnahme eines Schmiermittels an der Außenfläche des Bohrerkopfes (6), aus denen das Schmiermittel durch Druck auf die den Bohrerkopf umgebende Manschette (8) durch Kanäle (7) zu den zu schmierenden Teilen gedrückt wird. q.. Schmiervorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Gummimanschette (8) an den Stellen verdickt ist, welche über den die einzelnen Kammern (io) voneinander trennenden Rippen liegen.
9 paragraphs, as filed
The object of the present invention is a device for lubricating the tool bush of the transfer chuck for the drill and the forwardly extending percussion piston extension of rock drill hammers. There are rock drill hammers are known in which the lubricant is supplied to the working machine parts by the operating pressure air in such a way that it compresses the lubricant to the cylinder of the transfer device and the conversion chuck from an annular piston surrounding the percussion vessel forth by special channels to be lubricated to the Lead surfaces.
The present invention allows to supply the lubricant to the parts to be lubricated by finger pressure, regardless of the air pressure.
The invention consists in that a collar made of rubber or other resilient material forms the outer wall of a lubricant-containing chamber, which is formed in the head and optionally in the cylinder of the drill. By pressure on the sleeve, the lubricant can be passed through suitable channels o. The like. From the chamber or the chambers to be lubricated parts.
In the drawing, an example embodiment of the invention in longitudinal and cross section is shown.
i is the actual drill whose shaft is generally provided with four longitudinal grooves z, in the four ribs 3 engage the bush 4 of the chuck 5, which sits in a cylindrical extension 6 of the machine cylinder 6a. Radial channels 7 lead through the bush 4, the lining 5 and the cylindrical extension 6 to the outer surface of the same. The cylindrical extension is surrounded by a rubber sleeve 8, which is held on it by brackets 9 of conventional design. The brackets are expediently made of two parts, which are provided with ears and held together by bolts. The outer surface of the cylindrical For essay is provided with four longitudinal depressions io, in which the radial channels 7 open. The wells are filled with grease under pressure by means of a per se known device, which is connected to the normally closed by a screw plug feed channel ii.
From the depressions io the grease can be pressed by finger pressure on the rubber sleeve 8 to the parts to be lubricated. Optionally, the rubber boot 8 may be thickened at those locations where it overlies the ribs separating the individual depressions. As a result, the flexibility of the rubber is increased over the wells.
The rubber sleeve 8 protects the head formed by the cylindrical extension 6 against hammer blows, so that it can be made very easily. For the same protective purpose, the rubber boot may optionally extend backwards beyond the cylinder 6a, so that the protected cylinder wall can be kept thin without breakage by hammer blows. This facilitates the manufacture of a lightweight machine. The longitudinal ribs which separate the lubricant-containing longitudinal depressions contribute to the strength of the whole. The channels 6b for the compressed air can be arranged in the longitudinal ribs.
12 is a rubber ring or pad located on the front of the machine head to prevent dust from entering. along the shaft ia to prevent the working parts of the machine.
The chuck 5 is provided at its rear part with the usual grooves for attacking the piston head.
Every citation, both ways
| Document | Relation | Office | Cited during |
|---|---|---|---|
| US7328753B2 | Cited by | United States of America | Applicant |
| WO2005087448A1 | Cited by | World Intellectual Property Organization (WIPO) | International search |
Numbers
- Publication
- 511574
- Application
- 61432
Titles2
- German
- Schmiervorrichtung fuer Gesteinsbohrhaemmer
- English
- Lubricating device for rock drill hammers
Classification
- IPC, 1
- B25D17 26